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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2006-09-25 23:32:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-26 08:49:03 -0700 |
| commit | e1da95ae38afdcda83328300c4aed755d9fc01a6 (patch) | |
| tree | e4d0c54a44df19235b656eae92ab3da2404024ba /drivers/serial | |
| parent | c8eb8b4025175f967af0ba8e933f23aa9954dc35 (diff) | |
| download | linux-3.10-e1da95ae38afdcda83328300c4aed755d9fc01a6.tar.gz linux-3.10-e1da95ae38afdcda83328300c4aed755d9fc01a6.tar.bz2 linux-3.10-e1da95ae38afdcda83328300c4aed755d9fc01a6.zip | |
[PATCH] suspend: make it possible to disable serial console suspend
Hack uart_suspend_port() and uart_resume_port() so that serial console
ports are not suspended if CONFIG_DISABLE_CONSOLE_SUSPEND is set.
This makes it possible to debug the suspend and resume routines of all
device drivers as well as the lowest-level swsusp code with the help of the
serial console.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/serial_core.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index 372e47f7d59..5f7ba1adb30 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -1929,6 +1929,13 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *port) mutex_lock(&state->mutex); +#ifdef CONFIG_DISABLE_CONSOLE_SUSPEND + if (uart_console(port)) { + mutex_unlock(&state->mutex); + return 0; + } +#endif + if (state->info && state->info->flags & UIF_INITIALIZED) { const struct uart_ops *ops = port->ops; @@ -1967,6 +1974,13 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *port) mutex_lock(&state->mutex); +#ifdef CONFIG_DISABLE_CONSOLE_SUSPEND + if (uart_console(port)) { + mutex_unlock(&state->mutex); + return 0; + } +#endif + uart_change_pm(state, 0); /* |